Neochanna: Difference between revisions
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| familia = [[Galaxiidae]] |
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| genus = ''[[Neochanna]]'' |
| genus = ''[[Neochanna]]'' |
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| subdivision_ranks = species |
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Revision as of 19:22, 21 November 2006
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| Genus: | Günther, 1867
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Neochanna is a genus of six mudfish species, five restricted to New Zealand, and one to Tasmania with a small enclave on Wilson's Promontory,Victoria, Australia. They are small (up to about 15 cm) freshwater fish that have become specialised for life in a distinctive type of habitat – swamps, drains, and forest pools that tend to dry up in summer. They can exist in these habitats because they have the ability to aestivate during dry summers.
Mudfish are an elongate, slender-bodied group of fish with blunt heads and small eyes. Many species lack pelvic fins, and this is one way to distinguish them from other members of the Galaxiidae family. They also do not have barbels or scales.
Spawning takes place at the beginning of the wet season and probably continues through to early spring. They are non-diadromous so do not have a saltwater phase as many other members of the Galaxiidae family do.
Mudfish/kowaro are regarded as a taonga (treasured) species to Māori iwi in New Zealand, and all six species are threatened. Once widespread in swamps and wetlands, mudfish are now found in only a few sites – mostly on private land. In New Zealand the Department of Conservation is working with landowners to protect these key remaining habitats.
Species
- Brown mudfish, Neochanna apoda Günther, 1867
- Canterbury mudfish, Neochanna burrowsius (Phillipps, 1926)
- Tasmanian mudfish, Neochanna cleaveri (Scott, 1934)
- Black mudfish, Neochanna diversus Stokell, 1949
- Northland mudfish, Neochanna heleios Ling & Gleeson, 2001
- Chatham mudfish, Neochanna rekohua Mitchell, 1995
References
- Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Neochanna". FishBase. March 2006 version.
- NIWA June 2006